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Re: direct-IO writes strange behavior

To: Alberto Nava <beto@xxxxxxxxxxx>
Subject: Re: direct-IO writes strange behavior
From: Nathan Scott <nathans@xxxxxxx>
Date: Sat, 29 Nov 2003 12:39:22 +1100
Cc: linux-xfs@xxxxxxxxxxx
In-reply-to: <3FC7F2E1.6070202@xxxxxxxxxxx>; from beto@xxxxxxxxxxx on Fri, Nov 28, 2003 at 05:14:09PM -0800
References: <3FBECF7E.6010509@xxxxxxxxxxx> <3FBFEF6A.3000609@xxxxxxxxxxx> <20031127004420.77f31a9c.akpm@xxxxxxxx> <3FC78FA4.2090000@xxxxxxxxxxx> <3FC7F2E1.6070202@xxxxxxxxxxx>
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On Fri, Nov 28, 2003 at 05:14:09PM -0800, Alberto Nava wrote:
> Alberto Nava wrote:
> 
> > 
> > I'll try this again on test9 or test11.
> > 
> I tried this with the 2.6.0-test11 and it works fine. The 512k
> writes to a new file are propagaded all the way to the drives. It
> work without having to use '-d unwritten' or preallocation.
> 
> Here is a snip of the proc file I used to verify it.
> 
> (8,16)@85886 b=f24f0d80 r=ef9c49b0 s=140288(size=524288) prio=0 rw 1
> (8,32)@85886 b=ef891680 r=ef9c47b8 s=140288(size=524288) prio=0 rw 1
> (8,48)@85895 b=ef891680 r=ef9c49b0 s=140288(size=524288) prio=0 rw 1
> (8,64)@85895 b=f24f0d80 r=ef9c47b8 s=140288(size=524288) prio=0 rw 1
> (8,80)@85903 b=ef891680 r=ef9c47b8 s=140288(size=524288) prio=0 rw 1
> 

thanks for checking.

> Thanks a lot for your help

no problem.

cheers.

-- 
Nathan


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